File:Phyllosiphon arisari.jpg
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editDescriptionPhyllosiphon arisari.jpg |
Identifier: algvolimyxophy1916west Title: Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ Year: 1916 (1910s) Authors: West, G. S. (George Stephen), 1876-1919 Subjects: Algae Publisher: Cambridge [Eng.] The University press Contributing Library: MBLWHOI Library Digitizing Sponsor: MBLWHOI Library
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Text Appearing After Image: Fig. 156. Phyllosiphon arisari Kühn. A, leaf of Arisarum vulgare showing the diseased areas caused by the Phyllosiphon ; B, branches of the Alga in the leaf-stalk, ×68 ; C, portion of algal thallus with aplanospores, ×340 ; D, aplanospores, ×400. (From Wille, after Just.) every direction the intercellular spaces of the leaves and leaf-stalks of various members of the Aracea?. Owing to this intrusion and the destructive action of the invader, the leaves of the host soon display diseased area sfrom 0-5—1 cm. in diameter, which often coalesce at their margins to form larger patches (fig. 156 A). These patches are at first yellow owing to the secretion of orange-yellow oleaginous droplets in the cells of the host due to the stimulation of the parasite. When the leaf wilt;S theoleaginous droplets disappear and the filaments of Phyllosiphon, which are now packed with green aplanospores, cause the affected spots to appear strikingly green on the withered leaf (Maire, 08). There are numerous
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Date | |
Source | Image from page 253 of "Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ" (1916) |
Author | Internet Archive Book Images |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. | |
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current | 16:47, 21 May 2019 | 1,644 × 1,408 (634 KB) | Awkwafaba (talk | contribs) | =={{int:filedesc}}== {{Information |Description='''Identifier''': algvolimyxophy1916west '''Title''': [https://www.flickr.com/photos/internetarchivebookimages/tags/bookidalgvolimyxophy1916west Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ] '''Year''': [https://www.flickr.com/photos/internetarchivebookimages/tags/bookyear1916 1916] ([https://www.flickr.com/photos/internetarchivebookimages/ta... |
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